Trustees



(No Model.) 2 Sheets-Sheet 1.

L.. GODDU. MACHINE FOR INSERTING SCREW THREADED WIRE INTO THE SOLBS 0F BOOTS 0R SHOES. I Patented June 28, 1892.

THE nouns virus w.;'gnuro-\ r (No Model.) 2 Shpets-Shpet 2..

L.GODDU. A MACHINE FOR INSERTING SCREW THREADED WIREINTO THESOLES 0P BOOTS 0R SHOES.

No; 478,056. Patented June 28, 1892 UN TED STATES PATENT 7 OFF CE.

LOUIS 'GODDU, OF VVINGHESTER, ASSIGNOR TO JAMES WV. BROOKS, OF CAM- BRIDGE, AND FRANK F. STANLEY, OF SWAMPSOOTT, MASSACHUSETTS,

TRUSTEES.

MACHINE FOR lNSERTlNG SCREW-THREADED WIRE INTO THE SOLES OF BOOTS OR SHOES.

SPECIFICATION forming part of Letters Patent No. 478,056, dated June 28, 1892.

Application filed September 14, 1891. Serial No. 405,664- (No model.)

To all whom it may concern:

Be it known that I, LOUIS GODDU, of VVinchester, county of Middlesex, State of Massachusetts, have invented an Improvement in 5 Machines for Inserting Screw-lhreaded ire into Soles of Boots and Shoes, Leather, &c., of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings rep resenting like parts.

This invention has for its object to improve that class of machine represented in United States Patent No. 171,610, dated December-2S, 1875. The machine described in said patent 1 5 has a spindle which receives a single-threaded wire which is fed out through the nose at the end of the said spindlebygripping and feeding rolls, and the wire is inserted into the stock resting on a suitable horn or support, the wire while being inserted being rotated so that the threads thereon are screwed into the stock. The wire, having been inserted into the sole, is cut oif flush with the sole, leaving afastening therein. In the machine referred t0 the spindle is rotated continuously, and thegripping and feeding rolls carried by the spindle at the lower end thereof have imparted to them an intermitting movement in the direction to feed the wire from the nose at the end of the spindle, they being moved once during each rotation of thecam-shaft. The gripping and feeding rolls referred to derive their intermitting movements from a cam on a camshaft driven from the worm on the spindle re- 3 5 ferred to. In the machine described the spindle is mounted in bearings in a head, and the weight of the wire, added to the weight of the head and its parts, results in very considerable strain being put upon the machine when the head has its rising and falling and also its lateral vibrating movements, as when the shoe is being fed, and because of its weight it has been found i-mpracticabletorotatethespindle above a certain speed and do good work.

5 Owing, however, to the great competition in the manufacture of shoesitbecame a great desideratum to increase the eifect-ive speed of operation of the machine referred to, as suchincrease of effectiveness lessens the cost of pro- 0 duction of boots and shoes thereon. In my attempts tosolve this problem and increase the effectiveness of the particular machine under consideration I found that the speed of the spindle could not safely be increased,but rather ought to be reduced; but after considerahle experiment I discovered that the camshaft actuated by the spindle might be made to rotate at a faster speed, and I therefore provided the spindle with a double worm and altered the teeth of the worm-gear on the camshaft, and by so doing I doubled the speed of the cam-shaft, so that itwas thus made to actuate not only the gripping and feeding rolls, but the Wire-cutting and the head-lifting and head-vibratingorfeedingdevices,twiceduring each complete rotation thereof instead of once. as inthe patent referred to, and this made it possible'to reduce the speed of rotation of the spindle and yet do nearly double the amount of work. To further aid in making the said ma- 7o chine more efficient as to the amount of work produced thereon, I have been able in its changed conditions, to be described, for the first time to utilize my two-threaded wire, (represented in United States Patent No. 37 0,136,) the said wire having a steeper pitch than the single-threaded wire which has always been used in the patented machine.

Figure 1 in side elevation represents a sufficient portion of a machine embodying my invention to enable the same to be understood. Fig. 2 is-a front elevation of the parts shown in Fig. 1. Fig. 3 is a left-hand side elevation of the parts shown in Fig. 1, but with the spindle rotated about ninety degrees from its position shown in Fig. 1. Fig. 4 is an enlarged detail showing the wire-carrying spindle with its attached wire -.feeding devices, the double worm and the worm-gear supposed to be upon the cam-shaft. Fig. 5 0 shows the worm-gear developed or laid out flat; and Fig. 6 is a longitudinal section of the spindle and its parts, the worm being omitted, the scale being the same as in Figs, 1 and 3. 5

The patent referred to was reissued as No.

7,033, April 4, 1876.

The standard 0; the spindle D, through which the threaded wire to be used is fed, it

being taken from asuitable spool F; the, pul- 10o ley F fast on the said spindle and rotated by a suitable belt driven by a suitable pulley (not shown;) the enlargement I at the lower end of the spindle; the feed rolls H; the toothed slide J; (see Fig. 6;) the threaded sleeve 0, connected to the upper end of it and provided with a loose collar the gear 1",: having a groove equal to one-half of the diameter of the wire, the said groove being opposite a groove in the slide J; the sleeve g, upon which the gear f is mounted; the pawl 11, carried by the said sleeve; the ratchetwheel h, actuated by the said pawl, the said ratchet-wheel being mounted upon a shaft h provided at its opposite end with a pinionj which engages an intermediate gearjflwhich in turn engages a pinion j, fast on one end ofone of the gripping and feeding rolls 11, having worm-like teeth to engage the threads of the wire; the bearing-plate H containing; the bearings for that oneof the grip and feed- ,5

rolls which is not rotated positively by the the loose collar 0 three-armed lever K, having at one end a roller or othcrstud; the rod .01, resting-on the stop 0; the sprin g p and sleeveg nut q; the wire-severing cutters 3, there be ing in practice two such cutters; set-screw r; the head E, in which the spindle D has its bearings and which also has bearings for the 5'; cam-shaft S; the arms '6, one for each member of thecuttcr; the nose D the lever M, instru-fi mental in actuating the arms t, carrying the; cutters to cut the wire offclose to the surface i of the sole; the vertical rod or pin N,j(shown'; by-dotted lines in Fig. 1;) the hollow post N the arm N projecting from the post N 2 and provided witha roller or otherstud the hollow sleeve .8; the vertical rod U; the lever V, to l which the upper end of the said rod is ad-l j ustably connected, said lever at its inner end i having a roller or other stud; the cam L, to actuate the lever K, said cam having a depression 2=(see Fig.3):and a projection 10, (see Fig. 1 the cam V to ac'tuate'the lever V; and l the cam O, .to actuate the rock-shaftN to swing the head E laterally to effect the feeding movement of the shoe being nailed, are and may be all as in the said Reisued PatentNo. 7,033, where the like parts are designated by like letters, with the exception of the-letter S, which is used to designate the cam-shaft.

In accordance with my invention I have provided the spindle D with a worm A, having two threads at a; and I have provided the cam-shaft S with a worm-gear R having its worm-teeth sloped and adapted to receive the double threads of the worm, so that the said worm carried by the spindle rotates the shafts.

In this my present invention by reason of the double-threaded worm, I am enabled to rotate the cam-shaft S at twice the speed at which it is rotated in the patent referred to, and consequently am enabled to vibrate the lever K, which effects the intermitting motion of the wire-feeding devices, and also the lever M to actuate the wire-cutting mechanism, and also the shaft Ntwice where heretofore it has operated but once, thus practically doubling the effective capacity of the machine. In practice, however, I find it advantageous to somewhat decrease the speed of the spindle D, and even when that is done the efficiency of the machine is greatlyincreased by reason of my present invention.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

In a machine for inserting screw-threaded wire into soles of boots and shoes, the following instrumentalities, viz: a rotating wirecontaining spindle, gripping and feeding rolls carried thereby and adapted to grip and feed the threaded wire longitudinally, wire-cuttin devices, a-cam-shaft having a worm-toothed ,gear and cams thereon,as L,V and 0, means operated by said cams to actuate the said Inv testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS GODDU. WVitnesses:

G. W. GREGORY, EMMA J. BENNETT. 

